US3203090A - Electrically operated hair clipping and shaving device - Google Patents

Electrically operated hair clipping and shaving device Download PDF

Info

Publication number
US3203090A
US3203090A US184109A US18410962A US3203090A US 3203090 A US3203090 A US 3203090A US 184109 A US184109 A US 184109A US 18410962 A US18410962 A US 18410962A US 3203090 A US3203090 A US 3203090A
Authority
US
United States
Prior art keywords
comb
cutter
casing
cutting
hair
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
US184109A
Other languages
English (en)
Inventor
Jepson Ivar
Sigmund R Kukulski
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sunbeam Corp
Original Assignee
Sunbeam Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority to BE552238D priority Critical patent/BE552238A/xx
Priority claimed from US544212A external-priority patent/US3072809A/en
Priority to GB20469/56A priority patent/GB826249A/en
Priority to CH356038D priority patent/CH356038A/de
Priority to DES51056A priority patent/DE1119991B/de
Priority to FR1165456D priority patent/FR1165456A/fr
Application filed by Sunbeam Corp filed Critical Sunbeam Corp
Priority to US184109A priority patent/US3203090A/en
Application granted granted Critical
Publication of US3203090A publication Critical patent/US3203090A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Images

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/62—Means for facilitating engagement or disengagement of coupling parts or for holding them in engagement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
    • B26B19/00—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers
    • B26B19/02—Clippers or shavers operating with a plurality of cutting edges, e.g. hair clippers, dry shavers of the reciprocating-cutter type
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02K—DYNAMO-ELECTRIC MACHINES
    • H02K33/00—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system
    • H02K33/02—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs
    • H02K33/04—Motors with reciprocating, oscillating or vibrating magnet, armature or coil system with armatures moved one way by energisation of a single coil system and returned by mechanical force, e.g. by springs wherein the frequency of operation is determined by the frequency of uninterrupted AC energisation

Definitions

  • the present invention relates to an electrically operated hair clipping and shaving device, and, more particularly, to such a device especially designed for the needs of women.
  • leg hair and underarm hair The problem of removing leg hair and underarm hair is really twofold.
  • the skin on the legs is firm and, therefore, it is possible to shave closely without irritation.
  • the skin under the arms is soft and tender and readily irritated. It would be desirable to provide a hair removing device that will do both of these necessary jobs, namely, removing leg hair and underarm hair better than has heretofore been possible.
  • a hair removing device particularly designed for the needs of women must be a small device, preferably no larger than an ordinary compact, and obviously it must be sturdily built and foolproof in operation. It should preferably be provided with cuting means which are capable of cutting very closely for removing leg hair, and also with cutting means which will remove underarm hair without irritating the soft and tender skin of the underarm.
  • Still another object of the present invention is to provide in a hair removing device designed particularly for women a cutting mechanism which can only be attached to the motive means in a particular manner thereby insuring proper use thereof.
  • FIG. 1 is a top plan view of an electrical hair removing device embodying the present invention
  • FIG. 2 is a side elevational view of the arrangement disclosed in FIG. 1, but with a comb guard shown in attached position;
  • FIG.3 is a bottom plan view similar to FIG. 1, but also showing a comb guard as in FIG. 2;
  • FIG. 4 is an enlarged sectional view taken on line 44 of FIG. 2, but without the comb guard;
  • FIG. 5 is a sectional view taken on line 5-5 of FIG. 4, assuming that FIG. 4 shows the complete structure
  • FIG. 6 is a sectional view taken on line 66 of FIG. 4, again assuming that FIG. 4 shows the complete structure
  • FIG. 7 is an exploded perspective view of the comb assembly and cutter only of the hair removing device of the present invention.
  • FIG. 8 is a perspective view of the portion of the casing of the hair removing device of the present invention to which the comb and cutter are adapted to be attached;
  • FIG. 9 is an exploded perspective view of the motor of the electric hair removing device of the present invention.
  • FIG. 10 is a greatly enlarged sectional view taken on line 10-10 of FIG. 4, assuming that FIG. 4 shows the complete structure
  • FIG. 11 is a fragmentary view of a portion of the electric motor illustrating a modification of the present invention.
  • the present invention is concerned with a ladies electric hair removing device particularly designed for removing both underarm and leg hair, which has a plastic case of pleasing appearance of a shape and configuration very similar to that of a ladies compact.
  • a powerful and efiicient resonant motor having no contacts, brushes or the like, is adapted to be disposed within the casing to actuate a cutter.
  • a comb and cutter assembly is mounted for ready removal from one edge of the casing, and the cutter is adapted to be driven by the electric motor to oscillate at a speed of the order of more than 14,000 cutting strokes per minute.
  • the comb and cutter assembly is provided at one edge with means for cutting leg hair and is capable of cutting very close to the skin.
  • the motor is mounted in the casing in a manner to be substantially vibration-free, and the entire mechanism is very light in weight, compact is design, and capable of giving years of trouble-free performance.
  • this electric hair removing device or cutter assembly comprises a reciprocating cutting blade or cutter 21, operating in coaction with a suitable comb assembly generally indicated at 22.
  • the cutter assembly is suitably and removably mounted on a casing 23.
  • a powerful electric motor, generally designated at 24, is housed within the casing 23 and drivingly connected to reciprocate the cutter 21.
  • the easing or housing 23 is preferably of a flat, circular configuration, best shown in FIGS. 1 to 3 of the drawings, so as to have a size and appearance very similar to that of the conventional compact.
  • conventional compact is meant the generally circular relatively thin container commonly used as a compact.
  • the casing 23 was slightly under three inches in diameter and of the order of an inch in maximum thickness.
  • the casing 23 is a two-part casing, comprising the cooperating parts 26 and 27, preferably molded from a suitable plastic. It will be appreciated that many moldable plastic materials are readily available on the market which provide a smooth and desirable appearing surface of any color.
  • the two casing sections 26 and 27 are very similar, although not identical, the interior of each being essentially a mirror image of the other.
  • the casing section 26 is provided over a substantial portion of its periphery engageable with the casing section 27 with an annular ledge 26a which cooperates with a similar ledge 27a provided around a substantial portion of the periphery of the engaging face of easing section 27 (seeFIGS. 4,. 5 and 6).
  • annular ledge 26a is displaced slightly laterally in casing section 26 relative to annular ledge 27a, so that when the casing sections are in the position shown in FIGS. 5 and 6, these ledges are side by side and a smooth exterior is providedat the junctions of the casing sections 26 and 27.
  • the section 27 is provided with integral pin portions 27b receivable in suitable cooperating openings 23 defined in casing section 26. These are best shown in- FIG. 4 of the drawings.
  • the easing section 27 has provided therein a plurality of threaded inserts such as 29 for threadedly receiving suitable fastening means such as 30 to. clamp the casing sections to gether.
  • suitable fastening means such as 30 to. clamp the casing sections to gether.
  • four screws or fastening means are provided, two of them being designated as 30, and the other two being designated as 31.
  • the fastening means 31 engage threaded inserts which are molded into the casing in a well known manner, and which threaded inserts are not shown in the drawings.
  • the fastening means 30, on the other hand, as is best shown in FIG.
  • threaded inserts 29 which need not be molded into the casing, but which may be inserted into openings defined in casing section 27.
  • the threaded inserts 29 are preferably each provided with an enlarged head portion, so that it will serve effectively as a nut threadedly to receive the fastening means 30 to clamp the casing sections together.
  • each of the casing sections 26 and 27 is provided with a strut, designated at 26c and 27c, respectively, which struts have aligned openings to receive one of the fastening means 30, and the adjacent ends of which struts abut each other to limit the distortion of the casing when the fastening means 30 is threadedly engaged with the threaded insert 29 effectively serving as a nut.
  • Two comparable projections are provided to abut each other on the opposite side of the casing from the struts 26c and 270, one of the projections, namely, 26d being shown in FIG. 4 of the drawings.
  • the projections such as 26d illustrated as long and slender, are provided in order to take up a minimum space and to permit the maximum space within the casing to be available for positioning the motor 24.
  • the top or bottom or both of the casing may be provided with a suitable metal plate such as 32, which may have any type of design thereon including initials, a monogram or the like.
  • this plate 32 is provided with a peripheral flange 32a which is disposed in a circular recess defined in the casing section 27.
  • a plurality of tabs, not shown, integral with the plate 32 extend through openings in the casing section 27 and are peened over to hold the plate 32 in position.
  • the plate 32 in addition to being a decorative plate, also hides the threaded inserts 29, so that a very pleasing casing appearance is provided.
  • Such a plate may also be provided on the outside of the casing section 26, although, as illustrated, a suitable design indicated at 33 is molded directly into the plastic of the casing.
  • the screws 30 and 31 are available from this side of the casing, as is clearly shown in FIG. 3 of the drawings.
  • the motor 24 is a very simple, compact motor, with no brushes or contacts which could cause radio and television interference.
  • the motor 24 is a powerful resonant motor, best shown in FIGS, 4 and 9 of the drawings.
  • This mot-or comprises a field structure which is a two-part field structure comprising somewhat U-shaped laminations 40 held together by suitable rivets such as 41.
  • the other po-r ion of the field structure comprises somewhat L-shaped lamina't-ions 42 held together by rivets 43.
  • the laminations 42 are provided at one end with cooperating notches 44 to receive tongues 40a integral with the laminations 4th.
  • the field structure is designed in two parts to facilitate assembling thereon a field coil designated as 45.
  • the assembled position of the field structure and field coil is clearly shown in FIG. 4 of the drawings.
  • the field coil comprises the conventional spool 46 with the necessary end portions, between which end portions and on which spool the winding 39 is Wound in the conventional manner.
  • the ends of winding 39 define current conductors 39a and 3%.
  • a motor field plate 47 and a frame plate 48 there is provided a motor field plate 47 and a frame plate 48.
  • the motor field plate 47 of somewhat T shape comprises an elongated central member 47a with integral transverse end members 47b and 470, the transverse end member 470 having a portion 47d extending on the opposite side of the port-ion 4711, as is clearly shown in FIG. 9 of the drawings.
  • the frame plate 48 is more complicated but includes portions corresponding to the above-described portions of plate 47.
  • the assembled field laminations 40 and 42 are clamped between the elements 47 and 48 which have cooperating openings for the rivets 41 and 43.
  • these rivets have projections which extend from either side of the field structure for a purpose which will be described in greater detail hereinafter.
  • the projections on the rivets 43 are designated as 43a
  • the projections on the rivet-s 41 are designated as 41a. Suffice it to say that in addition to providing the projections 41a and 43a, the rivets hold the tfield structure including the tfield plate 47 and frame 48 in assembled relationship.
  • the members 47 and 48 are formed of nonmagnetic material, such as brass, so as not to provide a flux path for the flux in the laminations 40 and 42, which, of course, are formed of magnetic material, such as silicon steel or the like,
  • the assembled field structure and winding provides an air gap between pole faces 49 and 50 which are defined on corresponding portions of the field laminations 40 and 42.
  • the plates 47 and 48 insure that the .air gap between the pole faces 49 and 50 is properly maintained.
  • an armature 52 which is formed of a plurality of laminations 53 held in assembled relationship by rivets 54.
  • a bell crank 55 To support the armature 52 for pivotal movement, there is provided a bell crank 55, one arm of which is preferably disposed at the center of the armature between two equal sections of laminat-io'ns 53.
  • the rivets 54 hold the laminations 53 and bell crank 55 in assembled relationship.
  • the bell crank 55 is provided with an arm or projection 55c through which power from the motor 24 is transmitted to any suitable means to be driven thereby.
  • the armature 52 is designed to move Within the air gap between pole faces 49 and 50, and to this end is provided with cooperating pole faces 52a and 52b.
  • the bell crank 55 is pivotally supported about a pivot point located outside the field structure.
  • the bell crank 55 is secured to a suitable bushing 58 having a suitable bearing therein, designated as 59, which may :be a porous bronze bearing or the like.
  • the bell crank 55 .and associated bushing 58 and bearing 59 are pivoted about a suitable shaft such as 60 extending between the frame members 47 and 48.
  • the shaft 60 extends between the projection 47d of frame 47 and a corresponding projection on frame 48.
  • the armature 512 is caused to describe an arcuate p-ath about the pivot member .or shaft 60, and by virtue of the bearing 59 this movement is constrained to insure arcuate movement of the armature 52 within a fixed path.
  • the armature 52 is substantially L-sbaped, with the base of the L being the end portion 52b which is disposed nearest the pivot shaft 60.
  • the longitudinal axis of said armature extends through the long arm of the L and generally perpendicular to the base thereof, and is generally parallel to the longitudinal axis of the air gap defined by a line etxending bet-ween pole faces 49 and 50. It will be apparent that the base of the L thus provides a greater crosssectional area for the end of the armature close-st the pivot pin which moves through a smaller arc than does the end 52a thereof.
  • armature springs 64 and :65 which normally tend to bias the armature .to the predetermined position shown in FIG. 4 of the drawings, so that the armature is disposed almost outside the gap between pole faces 49 and 50.
  • the armature 52 will :be attracted to tend to move in a direction to cause the pole faces 52a and 49 to be in substantial alignment, and similarly to cause the pole faces 52! and 50 to be in substantial alignment.
  • the normal or at rest position of the armature as shown in FIG.
  • the end 52b is partially in registry with the .pole face 50 so as to provide a flux path With a sulficiently low initial reluctance to insure that the armature 52 be pulled into the air gap when current is supplied to Winding 39.
  • the reluctance of the flux path at the end 52b of the armature is reduced thus insuring a higher flux density in the air gap adjacent pole face 49.
  • This higher flux density produces a greater force at that end 52a of armature 52 which has the maximum moment arm about the pivot pin 60.
  • this greater force insures a greater torque causing pivotal movement of armature 52.
  • the armature 52 must have a minimum dimension in the direction of the longitudinal axes of the springs 64 and 65, since these springs must have a minimum length for satisfactory operation.
  • the armature 52 should have a predetermined mass and moreover its area of crosssection should be such to provide a low reluctance path.
  • the armature 52 as best shown in FIGS. 6 and 9 of the drawings, is relatively Wide and substantially wider than the thickness of the field structure. Thus a low reluctance path is provided even while maintaining the dimension of the armature in the direction of the longitudinal axes of the springs 64 and 65 very small.
  • the portion of bell crank 55 clamped between la-rnina-tions 53 defining armature 52 is provided on either side thereof with projections 55a and 55b to support spring retaining cups 67 and 68, respectively.
  • These spring retaining cups are secured to the projections 55a and 55b by staking or the like, so that the cups will hold the adjacent ends of the springs 64 and 65, respectively.
  • the frame 48 is provided with a pair of ears 48a and 48b, respectively, which project laterally from the frame p oper so as to be disposed on either side of the cups 67 and 68, respectively.
  • the frame 48 preferably is provided with a peripheral flange 480 which includes as an enlargement thereof the projection 48a.
  • the frame 48 effectively performs a threefold operation: it acts as the motor frame, it provides a pivot support for the armature 52, and it also provides a support for the springs 64 and 65.
  • the springs 64 and 65 are precision coil springs accurately calibrated to be resonant at a frequency slightly separated from the frequency of the energizati-on circuit for the winding 39.
  • the springs 64 and 65 are preferably calibrated at just about sixty cycles or a harmonic thereof. Obviously, if they were resonant exactly at sixty cycles, one hundred twenty cycles or the like, the amplitude of the armature might be too great. On the other hand, if they were tuned to resonance too far away from sixty cycles, one hundred twenty cycles or the like, too much power would be lost. In a device built in accordance with the present invention, the springs 64 and 65 were tuned to resonance between sixty-three cycles and sixty-seven cycles.
  • the armature 52 is illustrated in the drawings as being wider than the field structure, to provide the maximum weight of the armature in a small size motor while permitting the maximum length of the springs 64 and 65. More-over, for most satisfactory operation of the motor 24, it is desirable to provide an arrangement whereby the maximum rate of change of flux occurs upon armature movement.
  • the ends 39a and 3% of the winding 39 of coil 45 are connected to suitable terminal pins 72 and 73 which are adapted to cooperate with a more or less conventional female type terminal plug described hereinafter.
  • a suitable terminal board 74 formed of an insulated material such as a laminated phenolic, is provided, the terminal pins 72 and 73 being suitably secured thereto and electrically connected to the ends 39a and 39b, respectively, of the winding 39 defining the coil 45 in a manner well understood by those skilled in the art.
  • the motor 24' is a unitary assembly which is very small and very compact.
  • the armature 52 Upon energization of the field coil 45 with alternating current, the armature 52 will be attracted into the air gap as the alternating flux produced thereby builds up toward the positive or negative peak. As this alternating flux goes through zero, the magnetic forces acting on armature 52 also go through zero and the springs 64 and 65 tend to return the armature to its normal or zero position. During the other half cycle of the alternating current flux the process will be repeated.
  • the oscillations of the armature 52 will be twice the frequency of the alternating current supplied to winding 39, and as long as power is supplied to winding 39, the armature 52 will oscillate about pivot shaft 60 at double the frequency of the supply voltage. Moreover, this motor will produce no clattering noise or the like, which is the case with vibrating ty-pe motors, as the armature moves against the field structure, since it is impossible for the armature 52 to make physical contact with any part of the field structure, the springs 64 and 65 effectively suspending the armature for oscillation about pivot shaft 60. Thus, even excessive movement of the armature 52 will cause no engagement with the field structure whatever. It will be appreciated that with a sixty-cycle power source, the armature will have a one hundred twenty cycle frequency, which means 14,400 strokes per minute to be transmitted to the movable cutter described hereinafter by the arm 550 of bell crank 55.
  • each casing section 26 and 27 is provided with four recesses, only two of which are shown'for each casing section in FIG. of the drawings. These recesses are designated by the reference nurneral 74- for the casing section 26, and 75 for the casing section 27. Supported within each recess 74 and 75 is a rubber mounting member 76, eight of them being provided in all. These rubber mounting members have a central opening adapted to receive the projections 41a and 43a of the rivets 41 and 43, respectively.
  • the motor 24 when the motor 24 is disposed within the casing 26, it is suitably supported in rubber mountings, whereby the transmission of vibrations from the motor to the casing is sub stantially reduced.
  • the recesses 74 and '75 are so disposed that the driving arm 550 of the bell crank 55, whose other arm supports the armature 52, is on one side of the casing 23, and diametrically opposed are the terminal pins 72 and 73.
  • the motor, and specifically the laminations 40 and the frame portions 47 and 48 are provided with aligned openings to define a passageway 78 through which this fastening means may extend.
  • the fastening means passing through these aligned openings does not hold the motor 24- in position other than indirectly by clamping the casing sections together.
  • the passageway 78 is of larger diameter than the fastening means 30 so that vibrations of the motor 24 are not transmitted direct y to the casing 23 through the fastening means 30.
  • the casing section 26 is provided at the edge thereof over a small portion of the periphery with a projection 26) and two transverse projections 26g disposed at the end of projection 26
  • the casing section 27 is provided with a projection 27 and two transverse projections 27g disposed at the end of projection 27].
  • the casing sections 26 and 27 are designed so that when assembled they define the recess 80.
  • the bottom of this recess is defined by casing walls to provide a substantially closed casing.
  • the portion of the comb assembly defining the skin engaging portion is preferably substantially level with the ends of the projections 26g and 27g, as shown in FIGS. 4, 5 and 10 of the drawings.
  • the walls of recess are propided with spaced ribs 81 defining grooves therebetween.
  • an opening 83 is defined in cooperating wall sections of the casing forming the substantially closed bottom of recess 80 through which the arm SSC may extend.
  • a resilient sealing member 84 which may be in the form of a sponge rubberlike member which has an opening through which the actuating arm 550 of hell crank 55 extends.
  • the sponge sealing member 84 fits tightly around the actuating arm 550 to insure a sealing action and at the same time effectively closes the opening 83 without interfering with oscillating movement of actuating arm 550.
  • coiled springs 85 are provided for this purpose.
  • These springs preferably have an enlarged turn or two at one end thereof, designated in the drawings as 85a (see FIG.
  • These springs are arranged to be contained in openings 87 defined in the parting line or cooperating portions of the casing sections 26 and 27 immediately below recess 80, which abut each other when the casing sections are clamped together as clearly shown in the drawings.
  • These recesses 87 have undercut portion 87a (see FIG. 10) so that when the springs 85 are inserted therein during the time when the casing sections are clamped together, the enlarged turns 85a prevent their subsequent removal.
  • the springs 85 project into the recess 80 for ready engagement with the cutter to be described hereinafter and are held in the operative position shown in FIGS. 2 and 10 of the drawings by the shape of the walls defining recesses 87.
  • the comb assembly 22 which cooperates with casing 23 to define a cutting head, is illustrated as a two-part member including a U-shaped support 88 and a comb portion 89, the latter being preferably made of sheet metal and having a hollow mushroomshaped head providing a generally rectangular, arcuate face 89d for contacting the skin from which the hair is to be removed.
  • a central rib 89a which, as is best shown in FIG. 10 of the drawings, is a channel-shaped deformation formed at the center of the arcuate portion.
  • the mushroom-shaped comb portion 89 of the comb assembly 22 includes, in addition to the arcuate section thereof having the central rib 89a, a pair of converging side portions 890 which connect spaced parallel portions 890 to the arcuate portion 89a.
  • the converging portions 8% are provided With a plurality of openings 95 along the length thereof, which are effectively hair escape openings through which hair clippings may fall.
  • the upwardly directed ends of the U-shaped support 88 extend to a point adjacent the bottom of the cutter 21 and serve to deflect clipped hair out through the openings 95, hence effectively preventing such hair from entering the inner portions of the comb and cutter assembly.
  • both the comb portion 89 and the U-shaped support 88 have a length of the order of the spacing between the projections 26g and 27g.
  • the U-shaped support 88 has a width so as to be disposed between the spaced parallel portions 89c of the comb 89 and is provided along each side thereof with outwardly directed hollow projections or rivet portions 8811 by means of which the mushroomshaped comb portion 89 of the cutting head may be secured thereto.
  • the portions 890 are provided with a plurality of aligned openings on either side for receiving the projections 88a, which projections may then be deformed as shown in FIGS. 7 and 10 of the drawings effectively to secure the U-shaped support 88 to the comb portion 89.
  • the U-shaped support 88 may be formed from a relatively heavy material to provide a strong support. Moreover, this U-shaped portion 88 of the comb assembly is designed to fit snugly within recess 80. The projections 88a are accommodated within the spaced grooves defined between the ribs 81.
  • the bight portion of the U-shaped support 88 is provided with a pair of relatively large openings 90 through which springs 85 may extend without interference. Also, the bight portion of the U-shaped support 88 is providedwith a central elongated opening 91 to permit the actuating arm 550 of the bell crank 55 to move freely and without interference when in driving engagement with the cutter, as will be described in greater detail hereinafter.
  • the mushroom-shaped comb portion 89 is formed of relatively thin spring steel material, preferably having a thickness of the order of twelve-thousandths of an inch or preferably between ten and fifteen-thousandths of an inch.
  • a thickness of the order of twelve-thousandths of an inch or preferably between ten and fifteen-thousandths of an inch In order to prevent underarm irritation, it is essential that the hair removing operation does not result in cutting too closely, and the range of thickness set forth above is necessary, as will become apparent from the following description, to avoid cutting too closely.
  • the comb portion 89 is provided with two sets of teeth, one along either edge of the arcuate portion 89d, which teeth are designated as 97 and 98, respectively.
  • These teeth are formed by providing a plurality of slots or apertures 97b and 98a along each respective edge of the comb through both the arcuate portion 89d and the diverging portions thereof, which, by virtue of the mushroom shape, are closely adjacent, as is clearly evident from FIG. 10 of the drawings. If the thickness of the spring steel material from which the comb portion 89 is made is of the order of twelve thousandths of an inch, the teeth 98 will insure that no closer cutting than twelve-thousandths of an inch will occur.
  • the teeth 98 effectively provide the teeth for cutting underarm hair.
  • the top edge of the arcuate portion of comb 89 along the teeth 97 is ground very thin, as indicated at 97a in FIG. 10 of the drawings, so that the stock thickness of these teeth 97 may be much thinner than twelve-thousandths of an inch to provide close cutting for the removal of leg hair.
  • the edge of the arcuate comb portion adjacent teeth 97 was ground to a thickness of the order of five-thousandths of an inch and preferably between threeand seven-thousandths.
  • the cutter 21 also formed of spring steel or suitable material which will insure good cutting action, is provided with a central U-shaped channel portion 21a slightly larger than the rib 89a so the latter may be partially nested therein, and a pair of laterally extending flange portion 21b, each of which terminates in cutting teeth 99.
  • the rib 89a serves as a guide for the reciprocating cutter 21 within which the rib 89a is nested.
  • a loose fit between the channel portion 21a and rib 89a is provided so that even and distributed wear will occur between the comb and cutter teeth.
  • the cutting teeth 99 are adapted to be disposed immediately beneath the cutting teeth 97 and 98, as is clearly shown in FIG. 10 of the drawings.
  • the cutter is ground on a cylindrical radius slightly larger than the radius of the comb at the teeth portions 97 and 98 thereof, so that the cutter will lap into the comb with use thereof to insure very good shearing action.
  • an opening 100 is preferably defined at the center of the bight portion of section 21a of cutter 21.
  • a distortion 101 of the bight portion 21a is provided on either side of this opening to insure engagement with the actuating arm 550 which is adapted to extend into the opening 100, as is clearly shown in FIG. 5 of the drawings.
  • the bight portion of the U-shaped section 21a thereof is provided with a plurality of dimples 102, which are adapted to be received into the upper ends of the springs 85, as is clearly shown in FIG. 10 of the drawings.
  • the actuating arm 55c moves into driving engagement with the cutter 21, and the springs 85 move into engagement with the U-shaped portion 21a of the cutter 21, the dimples 102 insuring proper positioning of the springs 85 relative to the cutter 21.
  • the comb and cutter are preferably provided with means to insure assembly in the same manner.
  • one side of the cutter and the corresponding side of the comb were painted or otherwise coated with the same unique color, so that in assembling the same the operator could readily make sure that the corresponding colors were on adjacent sides.
  • the corre sponding ends of the comb assembly 22 and cutter 21 may be provided with distinctive notches, such as indicated at 103 and 104, respectively. These notches should always be at corresponding ends when the cutting head is assembled. It will be appreciated that any suitable means for making it easy for the operator to assemble the cutter and comb assembly in the proper manner may be provided.
  • the casing is preferably provided with suitable indicia. As illustrated in the drawings, there are provided on one side of the casing the words For Legs, and on the other side of the casing the words For Underarms. Obviously, this indicia will have no meaning unless the comb and cutter assembly is applied to the casing in a predetermined manner. To this end the casing 23 and comb assembly 22 are designed so that the comb assembly cannot be attached to the casing in operative relation therewith unless it is attached thereto with the correct orientation.
  • the casing is provided on the side thereof adjacent which the colored or distinctive sides of the comb assembly and cutter should be positioned with a suitable indicia, such as the dot 106 indicated in FIG. 3 of the drawings.
  • This dot may be a colored dot corresponding to the color used on the cutter and comb assembly.
  • these projections S cooperate with cut-away sections or rabbeted portions indicated at 109 (see FIG. 7 of the drawings) at each end of the U-shaped support 88.
  • the comb and cutter assembly can only be attached in operative relationship with the casing and motor in one predetermined manner, thus positively insuring correct orientation thereof.
  • a pair of shoulders similar to the projections 108 are provided on the casing section 27 so as to space the comb portion 89 from the transverse projections 26g and 27g thereby to prevent the pinching and pulling of hairs into the spaces between the ends of the comb portion and the transverse projections.
  • spring clips 111 are preferably L-shaped, as best shown in FIG. 4 of the drawings.
  • the short leg of the L is arranged to be disposed in cooperating notches defined in casing sections 26 and 27, so that the long arm of the L-shaped clips 111 extends substantially vertically along the ends of the recess 80.
  • the upper end of the long arm of the L-shaped members 111 is provided with a laterally extending flange extending against the Wall of the recess and effectively fitting into cooperating recesses or notches 112 defined in the end casing sections 26g and 27g.
  • the midpoint of the long arm of the L-shaped members 111 can be distorted into the notches 112.
  • the intermediate portion of each of the long arms of the L-shaped member 111 is provided with a protuberance 111a extending into the recess 80, which protuberances are adapted to engage the ends of the bight portion of the U-shaped support member 38, as is clearly shown in FIG. 4 of the drawings, thus holding the comb and cutter assembly in attached relationship with the casing 23 and with the cutter in driving engagement with the arm 550 of the bell crank 55.
  • the spring clips 111 are resilient enough so that they will be distorted when the comb and cutter assembly is pushed into recess 80, and, conversely, the comb and cutter assembly may readily be removed by applying a small pulling force to the mushroom-shaped comb portion which will cause the latching portions 111a to release the comb and cutter assembly.
  • the operation of the cutting device designed especially for the removal of both leg hair and underarm hair will readily be understood by those skilled in the art.
  • One side of the cutting head will cut no closer than the thickness of the comb stock employed, so that underarm irritation will not occur.
  • the other side of the cutter head will cut much closer and is very satisfactory for removing leg hair.
  • the comb and cutter are readily detachable from the casing, so that excess hair can be blown out.
  • means are provided to insure that improper positioning thereof cannot occur.
  • simple means are provided to insure the proper assembly of the cutter head and attachment thereof to the casing 23.
  • a powerful motor is provided which is resiliently mounted in the casing and which has no parts that can move against each other to provide a loud noise.
  • FIG. 11 of the drawings a modification shown in FIG. 11 of the drawings may be employed, where a fragmentary portion of the motor 24 is illustrated.
  • a counterweight which is attached to the motor frame by an L-shaped spring arm 121. This counterweight will vibrate in opposition to the vibration produced by movement of the armature thereby reducing still further any vibrations produced by the motor 24.
  • the weight 120 is shaped so that it will readily fit within the casing 23.
  • the L-shaped arm is riveted to an L-shaped bracket 122, which bracket is secured to the field structure of the motor 24 by screws 123.
  • the counterweight 120 and the spring arm 121 are so selected that the composite counterweight structure has a natural frequency of vibration substantially equal to twice the frequency of alternation of the energizing current for the shaver which for one particular type of shaver is sixty cycles per second.
  • the counterweight 120 thus vibrates one hundred eighty degrees out of phase with the remaining vibrating structure thereby to minimize the over-all vibration of the shaver 20.
  • a hair removing device comprising an integral cutter including a U-shaped center portion and a pair of outwardly directed flanges disposed on either side thereof, each of said flanges having a row of cutting teeth defined on the outer edge, said cutting teeth being formed on one cylindrical radius and, a comb shaped to enclose said cutter flanges, said comb having a row of slots disposed over each row of said cutter teeth to allow the entrance of hair to be sheared, said slotted portion of the comb being formed on a larger cylindrical radius than said cutting teeth radius, said slotted comb portion and rows of cutter teeth only being in angular contact along two relatively thin spaced cutting lines defined therebetween, means positioned between said flanges biasing said cutter teeth into cutting engagement with said slotted comb portions, the thickness of said comb being greate along one side cooperating with one of said flanges than along the opposite side.
  • An electric hair removing device of the dry type comprising a casing of split construction having two mating sections, said casing defining a first recess and a second recess which is on the parting line between said sections, a motor positioned within said casing, a cutter assembly removably mounted on said housing including a comb and cutter in shearing relationship, said comb enclosing said cutter and received within said first recess, said cutter adapted to be driven by said motor when the cutter assembly is positioned in said first recess, spring means engaging said cutter and casing for biasing and maintaining said cutter in good shearing relationship with said comb, said spring means including at least one coil spring having an integral enlargement at one end thereof and adapted to be received within said second recess, said second recess having an undercut portion intersected by said parting line for receiving said enlargement thereby retaining said spring to said casing.
  • a hair removing device comprising a cutter formed with cutting teeth defined in two spaced parallel rows along opposite edges thereof, a comb enclosing said cutter and having two rows of slotted portions positioned overlying and cooperating with said cutting teeth for shearing hair therebetween, power means for reciprocating said cutter in a direction parallel to said cutter teeth rows, said comb formed so that the only contact between said 14 comb and cutte in a direction normal to said cutting teeth rows is between said cutter teeth and comb slotted portions and so that said comb slotted portions are formed on a curve whereby said slotted portions defines acute angles with said row of cutter teeth, and means positioned between said rows of cutter teeth biasing said cutter rows into cutting engagement with said slotted comb portions.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Mechanical Engineering (AREA)
  • Power Engineering (AREA)
  • Dry Shavers And Clippers (AREA)
US184109A 1955-11-01 1962-04-02 Electrically operated hair clipping and shaving device Expired - Lifetime US3203090A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE552238D BE552238A (zh) 1955-11-01
GB20469/56A GB826249A (en) 1955-11-01 1956-07-02 Electrically operated hair clipping and shaving device
CH356038D CH356038A (de) 1955-11-01 1956-10-25 Elektrischer Rasierapparat
DES51056A DE1119991B (de) 1955-11-01 1956-10-29 Elektrischer Schwingankermotor fuer elektrische Rasierapparate
FR1165456D FR1165456A (fr) 1955-11-01 1956-10-30 Appareil à actionnement électrique formant tondeuse et rasoir et utilisable notamment par les dames
US184109A US3203090A (en) 1955-11-01 1962-04-02 Electrically operated hair clipping and shaving device

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US544212A US3072809A (en) 1955-11-01 1955-11-01 Electrically operated hair clipping and shaving device
US184109A US3203090A (en) 1955-11-01 1962-04-02 Electrically operated hair clipping and shaving device

Publications (1)

Publication Number Publication Date
US3203090A true US3203090A (en) 1965-08-31

Family

ID=26879810

Family Applications (1)

Application Number Title Priority Date Filing Date
US184109A Expired - Lifetime US3203090A (en) 1955-11-01 1962-04-02 Electrically operated hair clipping and shaving device

Country Status (6)

Country Link
US (1) US3203090A (zh)
BE (1) BE552238A (zh)
CH (1) CH356038A (zh)
DE (1) DE1119991B (zh)
FR (1) FR1165456A (zh)
GB (1) GB826249A (zh)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100236073A1 (en) * 2005-08-05 2010-09-23 The Gillette Company Electric Razors
US20140331506A1 (en) * 2013-05-09 2014-11-13 Makita Corporation Reciprocating cutting tool
US20160303749A1 (en) * 2011-11-11 2016-10-20 Sunbeam Products, Inc. Electrical Hair Cutting Apparatus
EP2083746B1 (en) 2006-11-03 2018-01-10 Koninklijke Philips N.V. Vibration-canceling secondary resonator for use in a personal care appliance
USD937206S1 (en) * 2019-11-08 2021-11-30 Ontel Products Corporation Portable battery charger
USD939437S1 (en) * 2019-09-27 2021-12-28 Guangdong Gopod Group Holding Co., Ltd. Portable charger
US11318629B2 (en) 2018-03-23 2022-05-03 Koninklijke Philips N.V. Shaving assembly and hair cutting appliance

Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918565A (en) * 1930-04-02 1933-07-18 Delco Prod Corp Shock absorber
US2105223A (en) * 1937-02-05 1938-01-11 Nicholl Inc Hair clipper
US2222106A (en) * 1936-12-28 1940-11-19 Knapp Monarch Co Hair clipper
US2253037A (en) * 1937-11-06 1941-08-19 Knapp Monarch Co Dry shaver cutter head
US2282725A (en) * 1938-05-21 1942-05-12 Chicago Flexible Shaft Co Shaving implement
US2292858A (en) * 1938-07-28 1942-08-11 Gen Electric Shaving device and method of making
US2325267A (en) * 1940-09-27 1943-07-27 Thomas J Murphy Dry shaver cutter head
US2336638A (en) * 1939-03-15 1943-12-14 Remington Rand Inc Electric razor
US2345695A (en) * 1939-02-08 1944-04-04 Andis Clipper Co Dry shaving device
US2530759A (en) * 1946-12-05 1950-11-21 Laurence H Collins Electric razor
US2591403A (en) * 1947-06-26 1952-04-01 Remington Rand Inc Shaver head
US2637901A (en) * 1951-07-20 1953-05-12 Schick Inc Beard clippings receptacle for electric shavers
US2661531A (en) * 1950-01-04 1953-12-08 Remington Rand Inc Electric dry shaver construction
US2700788A (en) * 1954-03-22 1955-02-01 Walter L Hennelly Laterally resiliently displaceable stop for relatively movable elements
US2725625A (en) * 1952-09-17 1955-12-06 Frank F Muntz Hair pick-up for electric shavers
US2802260A (en) * 1955-12-30 1957-08-13 Charles S Allen Dry shaver with rotary cutting blades and suction fan
US2827695A (en) * 1955-07-14 1958-03-25 Frank J Vitale Hair clippers for trimming hair to different lengths
US2948063A (en) * 1957-05-20 1960-08-09 Sunbeam Corp Head for electrically operated hair clipping and shaving device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE7365C (de) * H. rumpf, Musiklehrerin, in Leipzig, Humboldtstrafse 25IV Vorrichtung zur Regulirung der Körperhaltung beim Klavierspiel
AT157081B (de) * 1936-03-23 1939-09-25 Clipshave Inc Haarschneidevorrichtung.
US2267582A (en) * 1937-04-22 1941-12-23 Aaron Hair clipper and shaver
US2283551A (en) * 1937-06-19 1942-05-19 Gillette Safety Razor Co Vibratory electric motor apparatus
US2238390A (en) * 1938-08-01 1941-04-15 Knapp Monarch Co Dry shaver
US2240890A (en) * 1938-10-11 1941-05-06 Oscar C Kavle Shaver
US2283552A (en) * 1940-01-31 1942-05-19 Gillette Safety Razor Co Vibratory electric motor apparatus
DE839911C (de) * 1942-01-31 1952-05-26 Richard Antretter Haarschermaschine fuer Rasierschnitt
CH233632A (de) * 1943-02-09 1944-08-15 Ag Scintilla Elektrischer Rasierapparat.
CH240267A (fr) * 1944-05-22 1945-12-15 Bueche Rosse Henri Rasoir mécanique.
US2629169A (en) * 1947-02-05 1953-02-24 Jacob L Kleinman Shaving implement
DE817852C (de) * 1949-11-08 1951-10-22 Kolla Vertrieb G M B H Scherkopf fuer elektrische Schergeraete fuer Rasierschnitt
DE918581C (de) * 1952-05-14 1954-09-30 Bosch Gmbh Robert Polarisierter Schwingankermotor
US2720696A (en) * 1954-01-29 1955-10-18 Sanford I Wadsworth Electric shaver
DE1019932B (de) * 1955-10-01 1957-11-21 Max Braun Fa Schwingankerantrieb fuer Trockenrasierapparate

Patent Citations (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1918565A (en) * 1930-04-02 1933-07-18 Delco Prod Corp Shock absorber
US2222106A (en) * 1936-12-28 1940-11-19 Knapp Monarch Co Hair clipper
US2105223A (en) * 1937-02-05 1938-01-11 Nicholl Inc Hair clipper
US2253037A (en) * 1937-11-06 1941-08-19 Knapp Monarch Co Dry shaver cutter head
US2282725A (en) * 1938-05-21 1942-05-12 Chicago Flexible Shaft Co Shaving implement
US2292858A (en) * 1938-07-28 1942-08-11 Gen Electric Shaving device and method of making
US2345695A (en) * 1939-02-08 1944-04-04 Andis Clipper Co Dry shaving device
US2336638A (en) * 1939-03-15 1943-12-14 Remington Rand Inc Electric razor
US2325267A (en) * 1940-09-27 1943-07-27 Thomas J Murphy Dry shaver cutter head
US2530759A (en) * 1946-12-05 1950-11-21 Laurence H Collins Electric razor
US2591403A (en) * 1947-06-26 1952-04-01 Remington Rand Inc Shaver head
US2661531A (en) * 1950-01-04 1953-12-08 Remington Rand Inc Electric dry shaver construction
US2637901A (en) * 1951-07-20 1953-05-12 Schick Inc Beard clippings receptacle for electric shavers
US2725625A (en) * 1952-09-17 1955-12-06 Frank F Muntz Hair pick-up for electric shavers
US2700788A (en) * 1954-03-22 1955-02-01 Walter L Hennelly Laterally resiliently displaceable stop for relatively movable elements
US2827695A (en) * 1955-07-14 1958-03-25 Frank J Vitale Hair clippers for trimming hair to different lengths
US2802260A (en) * 1955-12-30 1957-08-13 Charles S Allen Dry shaver with rotary cutting blades and suction fan
US2948063A (en) * 1957-05-20 1960-08-09 Sunbeam Corp Head for electrically operated hair clipping and shaving device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100236073A1 (en) * 2005-08-05 2010-09-23 The Gillette Company Electric Razors
EP2083746B1 (en) 2006-11-03 2018-01-10 Koninklijke Philips N.V. Vibration-canceling secondary resonator for use in a personal care appliance
US20160303749A1 (en) * 2011-11-11 2016-10-20 Sunbeam Products, Inc. Electrical Hair Cutting Apparatus
US20140331506A1 (en) * 2013-05-09 2014-11-13 Makita Corporation Reciprocating cutting tool
US9573207B2 (en) * 2013-05-09 2017-02-21 Makita Corporation Reciprocating cutting tool
US11318629B2 (en) 2018-03-23 2022-05-03 Koninklijke Philips N.V. Shaving assembly and hair cutting appliance
USD939437S1 (en) * 2019-09-27 2021-12-28 Guangdong Gopod Group Holding Co., Ltd. Portable charger
USD937206S1 (en) * 2019-11-08 2021-11-30 Ontel Products Corporation Portable battery charger

Also Published As

Publication number Publication date
BE552238A (zh)
FR1165456A (fr) 1958-10-27
CH356038A (de) 1961-07-31
DE1119991B (de) 1961-12-21
GB826249A (en) 1959-12-31

Similar Documents

Publication Publication Date Title
US3800172A (en) Hair clipper having blade illumination and field wire strain relief
US2530759A (en) Electric razor
US2601720A (en) Shaver head mounting
US3203090A (en) Electrically operated hair clipping and shaving device
US2858607A (en) Electric razor with rotary operated double edged blades
US3072809A (en) Electrically operated hair clipping and shaving device
US2309431A (en) Shaver
US3144571A (en) Electromagnetic motor having oppositely oscillating armatures
US3376636A (en) Shaving head for electric dry shaver
US3196539A (en) Electric dry shaver
US3218708A (en) Electrically operated dry shaver
US2783533A (en) Shaving attachment for electric shavers
US3090119A (en) Electric dry shaver
US2015160A (en) Electric razor and blade therefor
US2702938A (en) Electric dry shaver
US2304525A (en) Hair clipper
US3213301A (en) Electric dry shaver
US2797479A (en) Electric dry shaver
US2814866A (en) Razor having plural cutting heads which are operated in opposite directions by a vibrator type of motor
US3290776A (en) Electric dry shaver with common shaft for cutter and motor
US2819522A (en) Improved shearing head for hair clipper
US2696568A (en) Electric hair clipper
US2240890A (en) Shaver
US2149126A (en) Oscillatory motor
US3364569A (en) Electric shaver with magnetic latch and clutch actuated clipper